Help with Barco Vision 700HQ

[LostInUK]

Hi all,

long time no speak.

I need your help with the following. A friend of mine bought a Barco Vision 700HQ yesterday. The company that used it for years decided to change hardware and did a wholesale for that propose.
My friend bought it blindly, because price was quite low, but he has now realised that he does not even know the characteristics of the projector.

Could you, kindly, give us some details about the projector, i.e. max. scan frequencies, what resolution it would be capable of doing, any other worth knowing info, etc.
This projector would have to be installed 2.5m from the screen.

We are trying to understand if it is worth investing some money on it by changing one of the tubes (it needs it) plus all the required installation and setup by a professional.

Many thanks.

Best regards
Pedro

 

[LostInUK]

Anybody? We could not find almost anything about it on the web.

Thanks.

 

[Chris Frost]

Go to http://www.curtpalme.com/Barco701.htm#Downloads

and download the file called Barco Vision Cross Reference Spreadsheet

You'll find that the 700 will take video (15kHz) or line doubled video (32kHz).


Then have a look at the BARCO website - www.barco.com and download their Lens Program. If the 700 is listed it'll give you an idea about projection distance vs screen size.

As a rough rule of thumb pj distance/1.5 = screen width. Your 2.5 mtrs gives a screen width of approx 1.6 mtrs.

Regards

 

[LostInUK]

Hi Chris,

Thank you for the reply. I have downloaded the spreadsheet, which helps knowing some details.

By line-doubled, do you mean 480P/576P max.?

Is that is the case, it is a bit short of resolution for such screen dimension. Do you agree or have a diferent opinion?

Best regards
Pedro

 

[Chris Frost]

Yes, max 480p/576p. This seems low if you are used to watching a DLP/LCD data projector at 1024x768, but CRT works differently. It will look OK on a 6ft screen if you sit approx 2.5 - 3 mtrs away.

I would recommend that your friend buys a good quality line doubler or scaler. Look for a secondhand iScan Pro, they're very good for the money. This will make sure that the projector receives a high quality progressive image. After that then the final result will depend on how good you can set up the projector.

 

[LostInUK]

Thanks Chris. I will discuss that with him. It maybe another calibrations job for Gordon, if I manage to get my NEC XG852 tubes sorted too.

Best regards
Pedro